Home / 20,172,465.92-30,258,598.23-7,877,678.47

Finding the Fourth Proportional to 20,172,465.92, 30,258,598.23 and 7,877,678.47

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Solution

The fourth proportional to 20,172,465.92, 30,258,598.23 and 7,877,678.47 is: 11,816,478.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,172,465.92 : 30,258,598.23 = 7,877,678.47 : x
  2. Step 2: Convert to fraction form
    20,172,465.92/30,258,598.23 = 7,877,678.47/x
  3. Step 3: Cross multiply
    20,172,465.92x = 30,258,598.23 × 7,877,678.47
  4. Step 4: Simplify right side
    20,172,465.92x = 238,367,507,733,204.62
  5. Step 5: Solve for x
    x = 238,367,507,733,204.62/20,172,465.92
  6. Step 6: Final answer
    x = 11,816,478.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.